Triangulum
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- For the southern constellation, see Triangulum Australe.
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| Abbreviation: | Tri |
| Genitive: | Trianguli |
| Symbology: | The Triangle |
| Right ascension: | 2 h |
| Declination: | 30° |
| Area: | 132 sq. deg. (78th) |
| Main stars: | 3 |
| Bayer/Flamsteed stars: | 14 |
| Stars with known planets: | 1 |
| Bright stars: | 0 |
| Nearby stars: | 1 |
| Brightest star: | β Tri (3.00m) |
| Nearest star: | δ Tri (35.4 ly) |
| Messier objects: | 1 |
| Meteor showers: | None |
| Bordering constellations: | Andromeda Pisces Aries Perseus |
| Visible at latitudes between +90° and −60° Best visible at 21:00 (9 p.m.) during the month of December |
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Triangulum (IPA: /trʌɪˈaŋgjələm/) is a small northern constellation whose three brightest stars, of third and fourth magnitude, form an elongated triangle. It is one of the 88 modern constellations, and also one of the 48 listed by Ptolemy.
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[edit] Notable features
Triangulum has no stars of the first magnitude. Its brightest stars are β Trianguli (3.00m) and α Trianguli (3.41m).
[edit] Notable deep sky objects
Triangulum is the location of the Triangulum Galaxy, M33, one of the members of the Local Group. It is about 2.9 million light years away, and at magnitude 5.8 is sufficiently bright that it can be glimpsed with the naked eye under dark skies.
[edit] History and mythology
An early name of the constellation was Sicilia, because Ceres, patron goddess of Sicily, was claimed to have begged Jupiter that the island be placed in the heavens.
[edit] See also
[edit] External links
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| The 88 modern Constellations |
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| Andromeda • Antlia • Apus • Aquarius • Aquila • Ara • Aries • Auriga • Boötes • Caelum • Camelopardalis • Cancer • Canes Venatici • Canis Major • Canis Minor • Capricornus • Carina • Cassiopeia • Centaurus • Cepheus • Cetus • Chamaeleon • Circinus • Columba • Coma Berenices • Corona Australis • Corona Borealis • Corvus • Crater • Crux • Cygnus • Delphinus • Dorado • Draco • Equuleus • Eridanus • Fornax • Gemini • Grus • Hercules • Horologium • Hydra • Hydrus • Indus • Lacerta • Leo • Leo Minor • Lepus • Libra • Lupus • Lynx • Lyra • Mensa • Microscopium • Monoceros • Musca • Norma • Octans • Ophiuchus • Orion • Pavo • Pegasus • Perseus • Phoenix • Pictor • Pisces • Piscis Austrinus • Puppis • Pyxis • Reticulum • Sagitta • Sagittarius • Scorpius • Sculptor • Scutum • Serpens • Sextans • Taurus • Telescopium • Triangulum • Triangulum Australe • Tucana • Ursa Major • Ursa Minor • Vela • Virgo • Volans • Vulpecula |
